What should we do when the milling cutter has tool vibration?

Introduction Since there will be some small gaps between the milling cutter and the tool holder, the tool may vibrate during the machining process. Vibration will make the cutting amount of the circumferential edge of the milling cutter uneven, and the cutting and expansion amount will be larger than the original value, which will affect the machining accuracy and the service life of the tool. However, when the width of the machined groove is too small, the tool can be effectively vibrated, and the required groove width can be obtained by increasing the amount of cutting and expansion in this way. , otherwise stable cutting cannot be performed. The smaller the vibration of the milling cutter in normal machining, the better.

When tool vibration occurs, consider reducing the cutting speed and feed rate. If there is still large vibration after both have been reduced by 40%, consider reducing the amount of tool engagement.

If there is resonance in the machining system, the reason may be that the cutting speed is too high, the feed rate is too low, the rigidity of the tool system is insufficient, the clamping force of the workpiece is not enough, and the shape of the workpiece or the essentials of the workpiece clamping, etc., should be adjusted. Dosage, increase the rigidity of the tool system, increase the feed rate and other measures.

The rotary operation of carbide milling cutters can be divided into two types. The following is a brief analysis of Noble tool manufacturers for you:

First, the rotation direction of the milling cutter is the same as the cutting feed direction. At the beginning of the cut, the milling cutter bites the workpiece and cuts off the chips.

Rotary operation of carbide milling cutters

The other is reverse milling, in which the direction of rotation of the milling cutter is opposite to the direction of feed of the cut. Before starting to cut, the cutter must slide a section on the workpiece, starting from zero cut thickness and reaching maximum cut thickness at the end of the cut. The cutting force direction of the three-sided edge milling cutter is different, and some end milling or face milling. In face milling, the milling cutter is just outside the workpiece, so the direction of the cutting force should be paid more attention. In forward milling, the cutting force forces the workpiece into the table, and in backward milling, the cutting force forces the workpiece away from the table.

Because the cutting effect of forward milling is better, forward milling is generally used, and backward milling is only considered when there is a thread gap or an unsolvable problem in forward milling.